Sentences with phrase «organic molecules which»

These are small organic molecules which have an unpaired electron and which are stable.

In their experiments, the researchers made use of DXP, the organic molecule which is a red dye of the same type as once used by Ferrari for their famous Testarossa.

Not exact matches

Matter does not control or direct itself, yet science as it progresses is gradually uncovering a sort of organic unity within the universe in which atoms become molecules, molecules link to form chemicals that form proteins, these link to form DNA, simple life forms evolve into more complex life forms, and so on.

Matter does not control or direct itself, yet science describes a sort of organic unity within the universe in which atoms become molecules, molecules link to form chemicals that form proteins, these link to form DNA, simple life forms evolve into more complex life forms, etc..

I am not one of those and therefore, I can not form molecules which may become organic, and which may eventually — with added energy from solar rays on a planet which is capable of supporting it — evolve» endless form most beautiful and most wonderful.»

«What we have described as globalization is remarkably close to Teilhard de Chardin's planetization, in which «[mankind, born on this planet and spread over its entire surface, come [s] gradually to form round its earthly matrix, a single, major, organic unity, enclosed upon itself.4 Thus the globalization of humankind could lead to the formation of a new kind of living entity — a social organism — on the same cosmic principle as that by which atoms join to form molecules, molecules join to form mega-molecules, mega-molecules unite to form living cells, and innumerable cells constitute an organism.

First the vitalization of matter, associated with the grouping of molecules; then the hominization of Life, associated with a super-grouping of cells; and finally the planetization of Mankind, associated with a closed grouping of people: Mankind, born on this planet and spread over its entire surface, coming gradually to form around its earthly matrix a single, major organic unity, enclosed upon itself; a single, hyper - complex, hyper - centrated, hyperconscious arch-molecule, co-extensive with the heavenly body on which it was born.

The apparent gap between nonliving and living has now been bridged by nucleic acids, a class of polymeric organic molecules composed of a succession of small units (nucleotides) of four sorts, the order of which determines an indefinitely large number of different specificities.

Spontaneous self - organization is invoked by biochemists in the evolution of the prebiotic world in which a variety of atoms assembled into organic molecules eventually giving rise to molecules of RNA, DNA and proteins which led to further complex assemblies and eventually to cells.

«29 This abstract description is very general, applying equally well to molecules, amoeba, trees, rabbits, man, and that which transcends man in some new transhuman organic society.

There are 9 essential amino acids that we must get from the diet and 12 that are non-essential, which the body can produce out of other organic molecules.

These molecules can interact to produce complex organic compounds, which could generate DNA, RNA and amino acids.

He worked on the organic synthesis of molecules able to recognize and bind with other, smaller molecules, a phenomenon called molecular recognition, which had won Donald J. Cram, Jean - Marie Lehn, and Charles J. Pedersen the Nobel Prize in chemistry in 1987.

We found that the particles seen in our images, which were droplets of ocean only hours earlier, bore evidence of large organic molecules and compounds that indicated hydrothermal activity similar to that observed at deep - sea vents on Earth's seafloor.

The researchers focused on a hybrid membrane that is part polymer and part metal - organic framework, which is a porous three - dimensional crystal with a large internal surface area that can absorb enormous quantities of molecules.

When that happens, the hybrid membrane switches from having a single channel to transport carbon dioxide, in which the molecules must go through the polymer, to two channels, in which the molecules can either move through the polymer or through the metal - organic framework highways.

They analyzed the samples for colored dissolved organic matter, which contains light - absorbing molecules from the breakdown of plant polymers such as lignin.

In two star - forming regions of the galaxy, ALMA picked up signals emanating from three complex organic molecules, including dimethyl ether and methyl formate, which had not previously been detected outside our own galaxy.

Inspired by Aequoreas green glow, Mark Thompson of the University of Southern California and his colleagues synthesized chromophore - like molecules, which they then seeded onto a matrix of organic molecules in an organic LED (OLED).

It is also much longer than the average lifetime of dissolved organic molecules in the ocean, which generally circulate for thousands of years, not millions.

Known for their exceptional porosity that enables the trapping or transport of molecules, metal - organic frameworks (MOFs) take the form of a powder, which makes them difficult to format.

In these structures ligands, which are organic or inorganic molecules of variable independent stability, bind to one or more transition metal atoms.

In addition to water, the rover will look for organic carbon — from which life could be built — and molecules that could serve as an energy source.

In the crystal developed by UCLA researchers, a metallo - organic framework (top and bottom layers of molecules) surrounds central sphere - like shapes, which can rotate at up to 50 billion rotations per second.

The researchers ascribe this effect to the interaction between the electrons carrying electricity and the magnetic field which is generated by the surrounding atomic nuclei in the organic molecules.

«We utilize organic compounds with so - called conjugated double - bond systems, which allow the electrons to circulate freely within the molecule,» Langhals explains.

Many scientists favor Saturn's moon Titan, which has lakes of methane, an organic molecule that can give rise to life's building blocks.

Secondly, the organic material in sewage normally contains long - chain carboxylic molecules, which are negatively charged — something Booker calls «a lucky stroke of nature».

Among biogenic volatile organic molecules is a class of compounds called monoterpenes, which react with ozone, hydroxyl radicals, nitrogen oxides, and other gases in the atmosphere.

Water then interacted with impact - heated rock to enable synthesis of complex organic molecules, and the enclosed crater itself was a microhabitat within which life could flourish.

These organic molecules behave like mounting brackets to which the selective detector molecules can be attached in the next step.

Consequently, the analysis revealed that the metal atoms at the center of the organic molecules retained electron spins, which could generate magnetism.

At the core of an OLED is an organic molecule that emits light when a negatively charged electron and a positively charged hole, which can be thought of as a missing electron, meet on the molecule.

Scientists led by Sandra Pizzarello, a research professor in ASU's Department of Chemistry and Biochemistry, found that the Sutter's Mill meteorite, which exploded in a blazing fireball over California last year, contains organic molecules not previously found in any meteorites.

One path to finding life on other planets — or moons — involves looking for signature patterns of amino acids, which are organic molecules that are critical to life on Earth.

They were looking for a site with a venting process that produces a lot of hydrogen because of the potential it holds for the chemical, or abiotic, creation of organic molecules like methane — possible precursors to the prebiotic compounds from which life on Earth emerged.

Within a few years, Snyder and other radio astronomers had identified dozens of organic molecules, including formic acid (which causes the sting in ant bites) and methanol (a simple alcohol).

The researchers tested a variety of solutions containing the soil bacteria Geobacter sulfurreducens and Thiobacillus denitrificans, which thrive by eating acetate (an organic compound that makes vinegar sour) and nitrate (a negatively - charged molecule of biologically available nitrogen and oxygen), respectively, when they can find a spare electron or two.

Unlike conventional inorganic metals in which electrons zip through a crystalline lattice, in organics electrons must hop from one molecule to another, like pails of water being passed by a bucket brigade.

In this phenomenon, water molecules and oxygen in the atmosphere create strong oxidants which degrade organic compounds into water and carbon dioxide.

Although the conflict centered on cloves and nutmeg, plant researchers have long known that the fuss was really about two closely related organic molecules, eugenol and isoeugenol, which give the respective spices their characteristic aromas.

The paper reports a metal - free flow battery that relies on the electrochemistry of naturally abundant, inexpensive, small organic (carbon - based) molecules called quinones, which are similar to molecules that store energy in plants and animals.

Ancient organic matter trapped in rock might have been destroyed by water flowing through the rock, which would have split apart the organic molecules and produced carbon dioxide gas.

The red color shows the organic molecule, methanol, for which the radiation is concentrated close to the center.

This could be good news for life under the surface, as tectonics would deliver new material — including organic molecules deposited by comets — to this environment, which is otherwise completely sealed off from space.

Enceladus Life Finder, which would fly through plumes multiple times to collect and characterize the molecules that are there — particularly complex organic compounds that could indicate precursors of life.

In addition to water, organic molecules, which could have been deposited on the surface by crashing comets, somehow would have to get through the thick shells of ice for life to form, a situation that puts Saturn's geyser - spewing moon Enceladus at the top of Nimmo's list of potential spots for life.

The near - infrared mapping spectrometer on NASA's Galileo spacecraft found evidence of the presence of molecules made of oxygen, carbon, sulfur, hydrogen, and nitrogen on Europa, and a hint of the presence of a class of complex organic compounds called tholins which may be driven by pre-biotic processes (more).

A partial list would include the Patterson function, isomorphous replacement, and anomalous scattering, which enabled the determination of organic structures; direct (i.e., purely computational) methods of phase determination, which enabled small - molecule crystallography to be almost totally automated; synchrotron radiation and area detectors, which together made it possible to collect data on macromolecular structures in hours instead of months; and automatic interpretation of electron density maps.

In ancient bone, DNA is nestled among diverse organic and inorganic molecules, including collagen and a mineral form of calcium called hydroxyapatite, which must be dissolved away to extract sequenceable genetic material.